National Bank of Georgia Exchange Rate API: Official GEL Rates as JSON

The National Bank of Georgia publishes the official exchange rates that accounting, tax, and customs rules in Georgia reference — published official rates, not moving market prices. This guide shows how to pull them as JSON: via a REST endpoint or the zero-dependency nbg-exchange-rate npm package.

What the NBG publishes

• ~43 currencies against the lari — the official table the NBG sets each business day.
• Set for the following day — the NBG publishes its rates in advance, and the API preserves the bank's own dating, so the rate for any date was fixed before that date began.
• History back to 2016 — queryable by exact date or as a time series.
• The bank's own publication date on every response, so a rate is always citable.

The USD/GEL rate anchors the table: Georgian tax and accounting rules cite the NBG official rate, and the set-in-advance mechanism makes it deterministic — you know today which rate applies tomorrow.

Why official rates, not market rates

A live mid-market feed answers "what is USD/GEL trading at right now?" — the right tool for checkouts and dashboards. But accountants, auditors, and tax authorities ask a different question: "which rate were you required to use for this date?" That answer comes from the National Bank of Georgia's published rates, and it never changes after publication.

Get the latest rates (REST)

curl "https://allratestoday.com/api/v1/central-bank/nbg/latest" \
  -H "Authorization: Bearer YOUR_API_KEY"

The response is the bank's most recent published data — every rate and the publication date. The latest rates are available on every plan, including the free tier (300 requests/month, no credit card).

The npm SDK

npm install nbg-exchange-rate

import { getRate, getLatestRates } from 'nbg-exchange-rate';

// One pair at the official NBG rate
const pair = await getRate('USD', 'GEL', { apiKey: 'art_live_...' });
console.log(pair.rate, pair.rate_date);

// The bank's full published table
const table = await getLatestRates({ apiKey: 'art_live_...' });
console.log(table.rate_date, table.rates.length);

Zero dependencies, TypeScript types included, and it runs anywhere fetch exists — Node 18+, Bun, Deno, and edge runtimes.

Historical rates for an invoice date

import { getRatesForDate, getHistory } from 'nbg-exchange-rate';

// The official rates for an invoice date — non-publication days return
// the most recent published date, flagged via published_on_requested_date.
const day = await getRatesForDate('2026-06-30', { apiKey: 'art_live_...' });

// Time series for one pair
const series = await getHistory(
  { source: 'USD', target: 'GEL', from: '2026-01-01' },
  { apiKey: 'art_live_...' }
);

Historical dates and time series need a paid plan; the latest rates stay free.

Published vs derived pairs

If the NBG does not print a pair directly, the API resolves it from the bank's published rates — an inverse, or a cross rate via GEL — and flags it derived: true with the method used. Official and computed values are never silently mixed, which is exactly the distinction an auditor will ask about.

A decade of lari history

The series runs from 2016, covering the lari's swings from the 2.1s through the pandemic spike near 3.5 and the sharp 2022–23 appreciation as capital flowed in. For invoice-date lookups and audits, the NBG print — dated the bank's own way — is the official record.

FAQ

Does the National Bank of Georgia have an official exchange rate API?

The NBG publishes its official rates on its own site, and AllRatesToday serves the same published rates as clean JSON via REST or the nbg-exchange-rate npm package. The latest table is free.

How often do National Bank of Georgia rates update?

Each business day, with the rates dated for the following day — the API preserves the NBG's own dating. These are published official rates, not moving market prices — every response carries that date so you can cite it.

Can I get the NBG rate for a past date, like an invoice date?

Yes. The /central-bank/nbg/rates-for-date endpoint returns the official rates for any archived date. Non-publication days resolve to the most recent published date and are flagged, so your audit trail stays honest. Historical dates require a paid plan; latest rates are free.